Buffer pad



March 17, 1931. 1,796,7s7

BUFE-'ER PAD Filed Oct. 8 1928 z z WWW Patented Mar. 17, 1931 ,UNITED STATES PATENT, OFFICE HAROLD C. HATFIELD, OF RACINE, WISCONSIN, ASSIGTOB OF FORTY-NINE PER CENT TO JOHN F. HUBER, CF RACINE, WISCONSIN i BUFFEB PAD J Application filed October 8,1928. seriaiNo. suma.

nection with both portable and statonary bufiers, the present inventon is designed primarly for use upon automoble bodes and ,the like, wherein a high polish is desired, and

the surfaces encountered present great irregularities and numerous corners, impossii ble to be polished with conventional types of butlers. i

For accomplishing the purpose of'the ine vention, a flexible, concave pad is provided,

which may be faced with any suitable bufiing material, such as wool, felt, or sheepskin with the fleece retained thereon, the latter being preferable, in that actual use has demon- V strated that it is the most durable material and produces the most desirable finish.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described andmore particularly defined by the appended claims, it being understood that such changes in the precise embodiment of the herein disclosed invention may be made as come within the scope of the claims.

In the accompanying drawings is illustrated one complete example of the physical embodiment of the present invention constructed according to the best mode so far devised for the practical application of the principles thereof.

Figure l is a transverse, sectional view through a butter pad constructed in accordance with the present invention, and applied to a conventional portable butter.

Figure 2 is a plan section taken on the line 2-2 of Figure 1.

Referring now more particularly to the p caSDg, to which is attached a handle 2. For

convenence of operation, and to obtain the desired gear reduction, the driven shaft 3 is disposed at right angles to the longitudnal axis of the motor housing. WVhile the foregoing type of portable motor` driven butter has been illustrated and described, it Will be quite i apparent that the present invention may be utilized in connection with bufi'ers of any type, inasmuch as it is not dependent for its operation upon a specific type of design of bufl'er.

The pad comprising the present invention, consists of a concavo-convex annular disc 4 formed from reslient material, such as rubber or the like. While the disc may be formed in various ways, it is prefer'ed to cast the same in the normal shape illustrated. Formed integral with the disc and extending from its convex face, is a central attaching hub` 5, in which is embedded a metallic connecting sleeve 6. In casting the disc 4 it is proposecl to cast the sleeve directly in the hub, andin order to secure the same therein the upper and lower ends of the sleeve are provided with annular retaining fianges 7, while vertical webs 8 serve to prevent rotation of the sleeve within the hub.` A set screw 9 passingthrough an opening provided in the hub 5 in alinement with a threaded hole 10 provided` in the sleeve, serves to lock the sleeve upon the driven shaft 3. i i i While any suitablebufing material may be employed, such as wool, felt, and the like, it is proposed to utilize sheepskin with the fleece retained thereon, inasmuch as the same is highly flexible and produces the most desired finish. Also, the same readily lends itself to secure attachment to the dsc, by means of cement, or other suitable adhesive.

As illustrated in Figure 1, the entire conoave face of the disc 4 is covered with the sheepskin 11, thns, as the pad is forced into contact with a surface, nothing but the bulling material comes into engagement with the same.

It will also be noted that the disc 4 is tapered outwardly in cross section to a thin edge, thus providing sufficient rigdity of the disc adjaclt its central portion. to allow sutficient pressure to be eXerted in the buffig operation, and at the same time providing a maximum flexiblty at the outer edge of the disc to permit it to conform to irregular contours.

From the foregoing it Will be ohvious that a very simple, .efiicient, and d-urable bufiin-g pad has been pnodueed, which, .because of its normal concave bufi ing face, and itsfiexi bility, is enabledto conformto 'either convx or' concavesurfaces, or other ir egnlarities in contour.

I claim 1. A bufier pad comprising an annular concavo-conVeX dise of reilient material and provided With an integral hub on its vconvex face, said? disa taperng, outwardly; in cross sectionto a t-hin mngnaledge, a metallic sleeve .embedded in. sai-d hubfor receiving a: shaft, longitudinal .Webs on the sleeve extendi nginto saidhubxto prevent relativemovement betweensaidsleeve and hub, means for looking said .sleeve on said. shaft, and bufiing materialgsecuredto and covering the entire I conca-ve face ofsaid'diso.

2. A bufiexpad comprisingan annular eoncavo-convex disa of' resilient material* and provided rwithgan; integral hub on its conveX face, said disc taperng; outwardly in cross sectionto agtlinomangnal edge, a metallie sleeveembedded in said. hub'forreceiving a shaft, annila'rfianges on said sleeve and liongtudinal'webs between the fianges to prevent, relative: movement ;between said sleeve and hub, meansfor ;looking said sleeve on the shaft and bufiing material Secured to and covering the entir lconcave face of the disa.

33. .Abuffei' pad oomprising an annular con cavo-convex dsc of, reslent material and provided Withan integral; hub i, on its convex face, 'said diso'taperng outWardly in cross section to a ;eomparatively thin ;marginal edge and b ffing material Secured to 'andc-ovening theentireeonave `face of the disc. In testimony thatI claim the foregoingl have hereunto set my" hand atRacine, 'in the County of Racine and StateofWisconsin.

i ,HARQLD C. HATFIELD. 

